Autotest.add_hook :initialize do |at|
  at.clear_mappings

  at.add_mapping(%r{^test/.*_test\.rb$})              {|f, _| [f] }
  at.add_mapping(%r{^lib/factory_girl/(.*)\.rb$})     {|_, m| ["test/#{m[1]}_test.rb", 
                                                               "test/integration_test.rb"] }
  at.add_mapping(%r{^test/(test_helper|models)\.rb$}) { at.files_matching %r{^test/.*_test\.rb$} }
  at.add_mapping(%r{^lib/.*\.rb$})                    { at.files_matching %r{^test/.*_test\.rb$} }
end